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rust/library/compiler-builtins/libm
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Trevor Gross b50ea809ff Add a new precision adjustment for i586 exp2f 
There was a recent failure from the random tests:

     ---- mp_random_exp2f stdout ----
    Random Mpfr exp2f arg 1/1: 10000 iterations (10000 total) using `LIBM_SEED=fqgMuzs6eqH1VZSEmQpLnThnaIyRUOWe`

    thread 'mp_random_exp2f' panicked at crates/libm-test/tests/multiprecision.rs:41:49:
    called `Result::unwrap()` on an `Err` value:
        input:    (127.97238,) (0x42fff1dc,)
        expected: 3.3383009e38           0x7f7b2556
        actual:   inf                    0x7f800000

    Caused by:
        mismatched infinities

Add an xfail for mismatched infinities on i586.
2025-01-12 03:48:13 -05:00
..
.github/workflows Expose C versions of libm functions in the cb crate 2025-01-12 03:29:40 -05:00
ci Add a release-checked profile with debug and overflow assertions 2025-01-11 20:35:30 -05:00
crates Add a new precision adjustment for i586 exp2f 2025-01-12 03:48:13 -05:00
etc Replace "intrinsic" config with "arch" config 2025-01-06 20:17:01 -05:00
src Add biteq and exp_unbiased to Float 2025-01-11 22:58:00 -05:00
.editorconfig add generic libm helper 2023-01-17 20:41:24 +01:00
.git-blame-ignore-revs Add a .git-blame-ignore-revs file 2024-10-26 20:30:41 -05:00
.gitignore Expose C versions of libm functions in the cb crate 2025-01-12 03:29:40 -05:00
.rustfmt.toml Add a rustfmt.toml file matching rust-lang/rust 2024-10-26 20:28:28 -05:00
build.rs Add a release-checked profile with debug and overflow assertions 2025-01-11 20:35:30 -05:00
Cargo.toml Expose C versions of libm functions in the cb crate 2025-01-12 03:29:40 -05:00
CHANGELOG.md chore: release v0.2.11 2024-10-28 20:08:07 +00:00
configure.rs Account for optimization levels other than numbers 2025-01-07 17:58:54 -05:00
CONTRIBUTING.md Remove tests against system musl 2024-12-22 12:39:27 +00:00
LICENSE.txt Update licensing to MIT AND (MIT OR Apache-2.0) 2024-10-26 17:09:57 -05:00
README.md Use https: links in README.md 2024-11-14 18:13:10 +00:00

README.md

libm

A port of MUSL's libm to Rust.

Goals

The short term goal of this library is to enable math support (e.g. sin, atan2) for the wasm32-unknown-unknown target (cf. rust-lang/compiler-builtins). The longer term goal is to enable math support in the core crate.

Already usable

This crate is on crates.io and can be used today in stable #![no_std] programs.

The API documentation can be found here.

Benchmark

The benchmarks are located in crates/libm-bench and require a nightly Rust toolchain. To run all benchmarks:

cargo +nightly bench --all

Contributing

Please check CONTRIBUTING.md

Minimum Rust version policy

This crate supports rustc 1.63 and newer.

License

Usage is licensed under the MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT).

Contribution

Contributions are licensed under both the MIT license and the Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0). Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as mentioned, without any additional terms or conditions.

See LICENSE.txt for full details.